In the Rapture, will Catholics go to heaven, too?

I'm a Protestant Christian and yes, I do believe in the Bible and the Rapture. And, most of my family is Catholic, and to me, they are as Christian as anybody. Without Catholicism, there's no other denomination. Now, in the Book of Revelation, it talks about all of the Christians going to heaven. (***ANSWER THIS ONLY IF YOU'RE A CHRISTIAN) Does that include Catholics? Because, I would hate to think that only my mom and I would go to heaven over the rest of the Catholics in our family. Because they are a Christian denomination, just with different beliefs and traditions. I had learned a lot about Christianity from my Roman Catholic relatives and they are very Christian to me. I'm just wondering if the Rapture were ever to happen in our lifetime, would my Catholic relatives go to heaven? Because they deserve it! I wouldn't want them to suffer the Apocalypse for being of another Christian denomination. If that were to happen, I would then definetely underestimate the forgiveness and greatness of Christ.